remove appveyor and obsolete julia versions

Author: Datseris

.travis.yml

@@ -1,23 +1,17 @@
-# Documentation: http://docs.travis-ci.com/user/languages/julia/
 language: julia
 os:
   - linux
   - osx
   - windows
+
 julia:
-  - 0.7
   - 1.0
   - 1.3
-  - nightly
-branches:
-  - only:
-    - master
+  # - nightly
 matrix:
   allow_failures:
-    - julia: nightly
+  - julia: nightly
 notifications:
-  email: false
-# uncomment the following lines to override the default test script
-#script:
-#  - if [[ -a .git/shallow ]]; then git fetch --unshallow; fi
-#  - julia -e 'Pkg.clone(pwd()); Pkg.build("RecurrenceAnalysis"); Pkg.test("RecurrenceAnalysis"; coverage=true)'
+  email:
+    on_success: never
+    on_failure: never